1-7 Years Kids Girls Cotton Sleepsack Wearable Blanket Sleep Piggy 100% Cotton S (1T-3T) / M (3T-5T) / L (5T-7T) Foot openings for mobility when awake. Sleeveless to allow for ease of dressing and freedom of movement. Generous sack design allows room for kicking.Generous sack design allows room for kicking, but cannot be kicked off so child stays warm all night. Unzips from the bottom for easy diaper changes